Thank you for the link to the calculator, it was useful.
I definitely plan to use a weight distributing hitch.
Sorry, I did not mean to mislead about my weights. I "adjusted" them slightly after I went over the scales due to what I had in truck that should not have been there and added for stuff that should have been. I am confident, I am within 50 lbs. of the scale readings.
I know the truck does not have near the power of the newer breeds. I am content going 60mph. All of the weights are what I predict to be maximums. We may even go with a hybrid trailer which I know are generally lower profile and less weight. This truck is a recent purchase for me so unfortunately, I do not know much of the history. Trans shifts well, fluid looks good and does not smell burnt. I plan to service the trans, add a larger cooler and a trans temperature gauge. I don't want to push it, so I plan to keep it out of overdrive. Thanks guys for the input.